TY - JOUR
T1 - Mg Isotope Interlaboratory Comparison of Reference Materials from Earth-Surface Low-Temperature Environments
AU - Shalev, Netta
AU - Farkaš, Juraj
AU - Fietzke, Jan
AU - Novák, Martin
AU - Schuessler, Jan A.
AU - Pogge von Strandmann, Philip A.E.
AU - Törber, Philip B.
PY - 2018/6/1
Y1 - 2018/6/1
N2 - To enable quality control of measurement procedures for determinations of Mg isotope amount ratios, expressed as δ26Mg and δ25Mg values, in Earth-surface studies, the δ26Mg and δ25Mg values of eight reference materials (RMs) were determined by interlaboratory comparison between five laboratories and considering published data, if available. These matrix RMs, including river water SLRS-5, spring water NIST SRM 1640a, Dead Sea brine DSW-1, dolomites JDo-1 and BCS-CRM 512, limestone BCS-CRM 513, soil NIST SRM 2709a and vegetation NIST SRM 1515, are representative of a wide range of Earth-surface materials from low-temperature environments. The interlaboratory variability, 2s (twice the standard deviation), of all eight RMs ranges from 0.05 to 0.17‰ in δ26Mg. Thus, it is suggested that all these materials are suitable for validation of δ26Mg and δ25Mg determinations in Earth-surface geochemical studies.
AB - To enable quality control of measurement procedures for determinations of Mg isotope amount ratios, expressed as δ26Mg and δ25Mg values, in Earth-surface studies, the δ26Mg and δ25Mg values of eight reference materials (RMs) were determined by interlaboratory comparison between five laboratories and considering published data, if available. These matrix RMs, including river water SLRS-5, spring water NIST SRM 1640a, Dead Sea brine DSW-1, dolomites JDo-1 and BCS-CRM 512, limestone BCS-CRM 513, soil NIST SRM 2709a and vegetation NIST SRM 1515, are representative of a wide range of Earth-surface materials from low-temperature environments. The interlaboratory variability, 2s (twice the standard deviation), of all eight RMs ranges from 0.05 to 0.17‰ in δ26Mg. Thus, it is suggested that all these materials are suitable for validation of δ26Mg and δ25Mg determinations in Earth-surface geochemical studies.
KW - Earth-surface
KW - interlaboratory comparison
KW - low-temperature
KW - Mg isotopes
KW - reference materials
UR - http://www.scopus.com/inward/record.url?scp=85045834846&partnerID=8YFLogxK
U2 - 10.1111/ggr.12208
DO - 10.1111/ggr.12208
M3 - Article (Academic Journal)
AN - SCOPUS:85045834846
SN - 1639-4488
VL - 42
SP - 205
EP - 221
JO - Geostandards and Geoanalytical Research
JF - Geostandards and Geoanalytical Research
IS - 2
ER -